<!DOCTYPE html>
<html>

    <head>
        <title>h1-h6</title>
    </head>

    <body>
        <!-- h1~6,P -->
        <h1 style="color:red">H1 </h1>
        <h2>H2</h2>
        <h3>H3</h3>
        <h4>H4</h4>
        <h5>H5</h5>
        <h6>H6</h6>
        <!--  h7 == p -->
        <h7>H7</h7>
        <p>H7</p>
        H7
    </body>

</html>